U.S. patent application number 15/280033 was filed with the patent office on 2017-09-14 for display device, operating method of display device, and pixel circuit of display device.
The applicant listed for this patent is AU Optronics Corporation. Invention is credited to Pu-Jung HUANG, Cheng-Yeh TSAI, Tzu-Yi TSAO, Fang-Cheng YU.
Application Number | 20170261775 15/280033 |
Document ID | / |
Family ID | 56496507 |
Filed Date | 2017-09-14 |
United States Patent
Application |
20170261775 |
Kind Code |
A1 |
YU; Fang-Cheng ; et
al. |
September 14, 2017 |
DISPLAY DEVICE, OPERATING METHOD OF DISPLAY DEVICE, AND PIXEL
CIRCUIT OF DISPLAY DEVICE
Abstract
A display device includes a first substrate, a second substrate,
a first liquid crystal display medium, and a first electric field
applying component. The first electric field applying component is
configured to apply a first electric field to a first portion of
the first liquid crystal display medium and apply a second electric
field to a second portion of the first liquid crystal display
medium. The intensity of the first electrical field is operatively
different from that of the second electrical field.
Inventors: |
YU; Fang-Cheng; (HSIN-CHU,
TW) ; TSAO; Tzu-Yi; (HSIN-CHU, TW) ; HUANG;
Pu-Jung; (HSIN-CHU, TW) ; TSAI; Cheng-Yeh;
(HSIN-CHU, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
AU Optronics Corporation |
HSIN-CHU |
|
TW |
|
|
Family ID: |
56496507 |
Appl. No.: |
15/280033 |
Filed: |
September 29, 2016 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G02F 1/133514 20130101;
G02F 1/134363 20130101; G02F 1/137 20130101; G02F 1/133621
20130101; G02F 2001/133622 20130101; G02F 2201/121 20130101; G02F
1/136286 20130101; G02F 2203/04 20130101; G02F 1/134309
20130101 |
International
Class: |
G02F 1/137 20060101
G02F001/137; G02F 1/1343 20060101 G02F001/1343; G02F 1/1362
20060101 G02F001/1362; G02F 1/1335 20060101 G02F001/1335 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 8, 2016 |
TW |
105107066 |
Claims
1. A display device, comprising: a first substrate; a second
substrate; a first liquid crystal display medium, disposed between
the first substrate and the second substrate; and a first electric
field applying component, disposed on the second substrate, wherein
said first electric field applies a first electric field to a first
portion of the first liquid crystal display medium and applies a
second electric field to a second portion of the first liquid
crystal display medium, the first electric field and the second
electric field are parallel to the first substrate, and the first
electric field is operating with a different electric intensity
from that of the second electric field.
2. The display device of claim 1, wherein the first electric field
applying component comprises: a first electrode; a second
electrode; a third electrode; and a fourth electrode; wherein, a
first voltage difference is provided between the first electrode
and the third electrode, a second voltage difference is provided
between the second electrode and the fourth electrode, and the
first voltage difference is operatively different from the second
voltage difference.
3. The display device of claim 2, wherein the first electric field
applying component further comprises: a first electrode post; and a
second electrode post; wherein, the first electrode post and the
second electrode post are respectively disposed at two opposite
sides of the first liquid crystal display medium, the first
electrode and the second electrode are respectively disposed at two
opposite ends of the first electrode post, and the third electrode
and the fourth electrode are respectively disposed at two opposite
ends of the second electrode post.
4. The display device of claim 1, further comprising: a first
backlight source, in a first sub-frame, for providing a first-color
light toward the first liquid crystal display medium; wherein, in
the first sub-frame, the first electric field and the second
electric field provided by the first electric field applying
component have different intensities.
5. The display device of claim 4, further comprising: a second
backlight source, in a second sub-frame, for providing a
second-color light toward the first liquid crystal display medium;
wherein, in the second sub-frame, the first electric field and the
second electric field provided by the electric field applying
component have a same intensity.
6. The display device of claim 1, further comprising: a second
liquid crystal display medium, disposed between the first substrate
and the second substrate; a second electric field applying
component, disposed on the second substrate, for applying a third
electric field to a first portion of the second liquid crystal
display medium and to apply a fourth electric field to a second
portion of the second liquid crystal display medium, wherein the
third electric field and the fourth electric field are parallel to
the first substrate, and an intensity ratio of the first electric
field to the second electric field is different from an intensity
ratio of the third electric field to the fourth electric field.
7. The display device of claim 6, wherein the third electric field
and the fourth electric field have a same intensity.
8. An operating method of a display device, comprising: applying a
first electric field to a first portion of a first liquid crystal
display medium, wherein the first liquid crystal display medium is
disposed between a first substrate and a second substrate; and
applying a second electric field to a second portion of the first
liquid crystal display medium; wherein, the first electric field
and the second electric field are parallel to the first substrate,
and the intensity of the first electric field is operatively
different from that of the second electric field.
9. The operating method of claim 8, further comprising: providing a
first-color light toward the first liquid crystal display medium in
a first sub-frame, wherein the first electric field and the second
electric field have different intensities in the first
sub-frame.
10. The operating method of claim 9, further comprising: providing
a second-color light toward the first liquid crystal display medium
in a second sub-frame, wherein the first electric field and the
second electric field provided by an electric field applying
component have a same intensity in a second sub-frame.
11. The operating method of claim 8, further comprising: applying a
third electric field to a first portion of a second liquid crystal
display medium, wherein the second liquid crystal display medium is
disposed between the first substrate and the second substrate; and
applying a fourth electric field to a second portion of the second
liquid crystal display medium; wherein, the third electric field
and the fourth electric field are parallel to the first substrate,
and an intensity ratio of the first electric field to the second
electric field is different from an intensity ratio of the third
electric field to the fourth electric field.
12. The operating method of claim 11, wherein the third electric
field and the fourth electric field have a same intensity.
13. A pixel circuit of a display device, comprising: a first liquid
crystal component, coupled between a first end of a first capacitor
and a common electrode; a second liquid crystal component, coupled
between a second end of the first capacitor and the common
electrode; a first storage capacitor, coupled in parallel to the
first liquid crystal component; a second storage capacitor, coupled
in parallel to the second liquid crystal component; a first switch,
coupled between the first storage capacitor and a first data line,
for providing a first data voltage to the first storage capacitor;
and a second switch, coupled between the second storage capacitor
and a second data line, for providing a second data voltage to the
second storage capacitor.
14. A pixel circuit of a display device, comprising: a first liquid
crystal component, coupled between a first end of a first capacitor
and a first end of a second capacitor; a second liquid crystal
component, coupled between a second end of the first capacitor and
a second end of the second capacitor; a first storage capacitor,
coupled in parallel to the first liquid crystal component; a second
storage capacitor, coupled in parallel to the second liquid crystal
component; a first switch, coupled between the first storage
capacitor and a first data line, for providing a first data voltage
to the first storage capacitor; a second switch, coupled between a
first end of the second storage capacitor and a second data line,
for providing a second data voltage to the first end of the second
storage capacitor; and a third switch, coupled between a second end
of the second storage capacitor and a third data line, for
providing a third data voltage to the second end of the second
storage capacitor.
15. A pixel circuit of a display device, comprising: a first liquid
crystal component, having a first end and a second end, wherein the
first end of the first liquid crystal component is coupled to a
first end of a first capacitor; a second liquid crystal component,
having a first end and a second end, wherein the first end of the
second liquid crystal component is coupled to a second end of the
first capacitor, and the second end of the second liquid crystal
component is coupled to the second end of the first liquid crystal
component; a first storage capacitor, coupled in parallel to the
first liquid crystal component; a second storage capacitor, coupled
in parallel to the second liquid crystal component; a first switch,
coupled between the second end of the first liquid crystal
component and a first data line, for providing a first data voltage
to the second end of the first liquid crystal component; and a
second switch, coupled between the first end of the first liquid
crystal component and a second data line, for providing a second
data voltage to the first end of the first liquid crystal
component.
Description
TECHNICAL FIELD
[0001] The present disclosure relates to a device, a method, and a
circuit. In particular, the present disclosure relates to a display
device, an operating method of a display device, and a pixel
circuit of a display device.
BACKGROUND ART
[0002] With the development of science and technology, display
devices have been widely used in people's lives.
[0003] Typically, a liquid crystal display device is provided with
liquid crystal units and two polarizers vertical to each other. The
liquid crystal display device may apply a bias to the liquid
crystal units, to enable light to selectively pass through the
polarizers through the effect of the liquid crystal units, for
displaying. However, different liquid crystal materials have
different properties. Therefore, how to make use of a variety of
liquid crystal materials for controlling light to pass through the
polarizers is an important issue in the art.
SUMMARY OF THE INVENTION
[0004] One aspect of the present disclosure relates to a display
device. According to one embodiment of the present disclosure, a
display device includes: a first substrate, a second substrate, a
first liquid crystal display medium, and a first electric field
applying component. The first liquid crystal display medium is
disposed between the first substrate and the second substrate. The
first electric field applying component is disposed on the second
substrate and is configured to apply a first electric field to a
first portion of the first liquid crystal display medium, and to
apply a second electric field to a second portion of the first
liquid crystal display medium, wherein the first electric field and
the second electric field are parallel to the first substrate, and
the intensity of the first electric field is operatively different
from that of the second electric field.
[0005] Another aspect of the present disclosure relates to an
operating method of a display device. According to one embodiment
of the present disclosure, the operating method of a display device
includes: applying a first electric field to a first portion of a
first liquid crystal display medium, wherein the first liquid
crystal display medium is disposed between a first substrate and a
second substrate; and applying a second electric field to a second
portion of the first liquid crystal display medium. The first
electric field and the second electric field are parallel to the
first substrate, and the intensity of the first electric field is
operatively different from that of the second electric field.
[0006] Another aspect of the present disclosure relates to a pixel
circuit of a display device. According to one embodiment of the
present disclosure, the pixel circuit includes a first liquid
crystal component, a second liquid crystal component, a first
storage capacitor, a second storage capacitor, a first switch, and
a second switch. The first liquid crystal component is coupled
between a first end of a first capacitor and a common electrode.
The second liquid crystal component is coupled between a second end
of the first capacitor and the common electrode. The first storage
capacitor is coupled in parallel to the first liquid crystal
component. The second storage capacitor is coupled in parallel to
the second liquid crystal component. The first switch is coupled
between the first storage capacitor and a first data line, for
providing a first data voltage to the first storage capacitor. The
second switch is coupled between the second storage capacitor and a
second data line, for providing a second data voltage to the second
storage capacitor.
[0007] Another aspect of the present disclosure relates to a pixel
circuit of a display device. According to one embodiment of the
present disclosure, the pixel circuit includes a first liquid
crystal component, a second liquid crystal component, a first
storage capacitor, a second storage capacitor, a first switch, a
second switch, and a third switch. The first liquid crystal
component is coupled between a first end of a first capacitor and a
first end of a second capacitor. The second liquid crystal
component is coupled between a second end of the first capacitor
and a second end of the second capacitor. The first storage
capacitor is coupled in parallel to the first liquid crystal
component. The second storage capacitor is coupled in parallel to
the second liquid crystal component. The first switch is coupled
between the first storage capacitor and a first data line, for
providing a first data voltage to the first storage capacitor. The
second switch is coupled between a first end of the second storage
capacitor and a second data line, for providing a second data
voltage to the first end of the second storage capacitor. The third
switch is coupled between a second end of the second storage
capacitor and a third data line, for providing a third data voltage
to the second end of the second storage capacitor.
[0008] Another aspect of the present disclosure relates to a pixel
circuit of a display device. According to one embodiment of the
present disclosure, the pixel circuit includes a first liquid
crystal component, a second liquid crystal component, a first
storage capacitor, a second storage capacitor, a first switch, and
a second switch. The first liquid crystal component has a first end
and a second end, wherein the first end of the first liquid crystal
component is coupled to a first end of a first capacitor. The
second liquid crystal component has a first end and a second end,
wherein the first end of the second liquid crystal component is
coupled to a second end of the first capacitor, and the second end
of the second liquid crystal component is coupled to the second end
of the first liquid crystal component. The first storage capacitor
is coupled in parallel to the first liquid crystal component. The
second storage capacitor is coupled in parallel to the second
liquid crystal component. The first switch is coupled between the
second end of the first liquid crystal component and a first data
line, for providing a first data voltage to the second end of the
first liquid crystal component. The second switch is coupled
between the first end of the first liquid crystal component and a
second data line, for providing a second data voltage to the first
end of the first liquid crystal component.
[0009] Through the application of one of the above embodiments,
electric fields of different intensities can be applied to
different portions of the liquid crystal display medium. In this
way, the liquid crystal display medium can allow more refined
operations thereof.
BRIEF DESCRIPTIONS OF THE DRAWINGS
[0010] FIG. 1 is a schematic view of a display device according to
one embodiment of the present disclosure;
[0011] FIG. 2A is a schematic view of a light transmittance
according to one comparative example of the present disclosure;
[0012] FIG. 2B is a schematic view of a light transmittance
according to one comparative example of the present disclosure;
[0013] FIG. 3 is a schematic view of a display device according to
one embodiment of the present disclosure;
[0014] FIG. 4 is a schematic view of a display device according to
one embodiment of the present disclosure;
[0015] FIG. 5 is a circuit diagram of a pixel circuit of a display
device according to one embodiment of the present disclosure;
[0016] FIG. 6 is a circuit diagram of a pixel circuit of a display
device according to one embodiment of the present disclosure;
[0017] FIG. 7 is a circuit diagram of a pixel circuit of a display
device according to one embodiment of the present disclosure;
[0018] FIG. 8 is a flow chart of an operating method of a display
device according to one embodiment of the present disclosure;
[0019] FIG. 9 is a flow chart of an operating method of a display
device according to one embodiment of the present disclosure;
and
[0020] FIG. 10 is a flow chart of an operating method of a display
device according to one embodiment of the present disclosure.
DETAILED DESCRIPTIONS OF THE INVENTION
[0021] The spirit of the present disclosure is illustrated clearly
below with reference to drawings and detailed description, persons
having ordinary skill in the art, after understanding exemplary
embodiments of the present disclosure, may make changes and
modifications through techniques taught in the present disclosure,
without departing from the spirit and scope of the present
disclosure.
[0022] The terms "first", "second" and the like used herein do not
denote any particular order or sequence, and these terms are not
intended to limit the present disclosure, and are used only for
distinguishing between elements or operations described with same
technical terms.
[0023] The term "electrically coupled" used herein may mean that
two or more elements are in a direct physical or electrical contact
or in an indirect physical or electrical contact, and the term
"electrically coupled" may also mean that two or more elements
co-operate or interact.
[0024] As used herein, the terms "comprising," "including,"
"having," "containing," and the like are to be understood to be
open-ended, i.e., to mean including but not limited to.
[0025] As used herein, the term "and/or" includes any and all
combinations of one or more of the associated listed items.
[0026] As used herein, words indicating direction, such as "above,"
"below," "left," "right," "front" and "back," are directions as
they relate to the accompanying drawings. Therefore, such words
indicating direction are used for illustration and are not intended
to limit the present disclosure.
[0027] The meanings of every term used herein refer to a usual
meaning of the term known to one skilled in the art, unless
otherwise indicated. Some terms used to describe the present
disclosure will be discussed elsewhere in the specification, so as
to provide an additional guide to the description of the present
disclosure for persons skilled in the art.
[0028] FIG. 1 is a schematic view of a display device 100 according
to one embodiment of the present disclosure. In the present
embodiment, the display device 100 includes a first substrate SUB1,
a second substrate SUB2, a liquid crystal display medium LC1, LC2,
and an electric field applying component ET1-ET4, PL1, PL2.
[0029] In the present embodiment, the liquid crystal display medium
LC1, LC2 is disposed between the first substrate SUB1 and the
second substrate SUB2. In one embodiment, the liquid crystal
display medium LC1, LC2 may be implemented by blue-phase liquid
crystal. In the present embodiment, the electric field applying
component ET1-ET4, PL1, PL2 is disposed on the second substrate
SUB2. In one embodiment, the electric field applying component
ET1-ET4, PL1, PL2 includes electrodes ET1-ET4 and electrode posts
PL1 and PL2. The electrode posts PL1 and PL2 are respectively
disposed at two opposite sides of the liquid crystal display medium
LC1, LC2. In one embodiment, the electrodes ET1 and ET2 are
respectively disposed at two opposite ends of the electrode post
PL1, and the electrodes ET3 and ET4 are respectively disposed at
two opposite ends of the electrode post PL2.
[0030] In the present embodiment, the electric field applying
component ET1-ET4, PL1, PL2 is configured to apply a first electric
field to a first portion LC1 of the liquid crystal display medium
and to apply a second electric field to a second portion LC2 of the
liquid crystal display medium. In one embodiment, the display
device 100 may provide a first voltage difference V1 between the
electrode ET1 and the electrode ET3, to apply the first electric
field to the first portion LC1 of the liquid crystal display
medium. In one embodiment, the display device 100 may provide a
second voltage difference V2 between the electrode ET2 and the
electrode ET4, to apply the second electric field to the second
portion LC2 of the liquid crystal display medium.
[0031] In the present embodiment, the first electric field and the
second electric field are both generally parallel to the first
substrate SUB1 and the second substrate SUB2. In the present
embodiment, the intensity of the first electric field is
operatively the same as or different from that of the second
electric field, i.e., the first voltage difference V1 is
operatively the same as or different from the second voltage
difference V2. It should be noted that, although the two electric
fields are taken as an example herein, other numbers of electric
fields also fall within the scope of the present disclosure.
[0032] Through the above configuration, different portions of the
liquid crystal display medium LC1, LC2 can allow more refined
operations thereof, improving the displaying quality of the display
device 100.
[0033] For example, referring to FIG. 2A, in one comparative
example of the present disclosure, lights of different colors (that
is, different wavelengths) have different transmittances with
respect to the same liquid crystal display medium under the same
voltage, wherein a curve CV1 for example represents a blue light, a
curve CV2 for example represents a green light, and a curve CV3 for
example represents a red light. In this way, the complexity in
controlling the light to pass through the liquid crystal display
medium is increased, and a color shift may be generated under a
high voltage.
[0034] In contrast, referring to FIG. 2B, in one embodiment of the
present disclosure, by means of the different intensities of the
first electric field and the second electric field, the lights of
different colors (different wavelengths) are made to have generally
the same transmittance with respect to the same liquid crystal
display medium, wherein a curve CV4 for example represents a blue
light transmittance when an intensity ratio of the first electric
field to the second electric field is 36/28, a curve CV5 for
example represents a green light transmittance when the intensity
ratio of the first electric field to the second electric field is
36/36, and a curve CV6 for example represents a red light
transmittance when the intensity ratio of the first electric field
to the second electric field is 36/42. In this way, the complexity
in controlling the light to pass through the liquid crystal display
medium may be decreased, and the generation of the color shift
under a high voltage may be avoided.
[0035] Hereinafter, details of one embodiment of the present
disclosure are illustrated in connection with FIG. 3, but the
present disclosure is not limited thereto.
[0036] In one embodiment, a display device 100A, in addition to the
aforementioned components of the display device 100, further
includes a first backlight source BL1, a second backlight source
BL2, and a third backlight source BL3. In one embodiment, the first
backlight source BL1 is a blue backlight source, the second
backlight source BL2 is a green backlight source, and the third
backlight source BL3 is a red backlight source. It should be noted
that, the number and form of the aforementioned backlight sources
are exemplary only, and other numbers and forms of the backlight
sources also fall within the scope of the present disclosure.
[0037] In one embodiment, the first backlight source BL1, the
second backlight source BL2, and the third backlight source BL3 are
configured to provide lights of different colors to the liquid
crystal display medium LC1, LC2 respectively. The display device
100 is configured to generate the aforementioned first electric
field and second electric field through the electric field applying
component, for controlling the light transmittance of the liquid
crystal display medium LC1, LC2.
[0038] In one embodiment, in different sub-frames of a frame,
different backlight sources provide lights of different colors to
the liquid crystal display medium LC1, LC2, and the electric field
applying component ET1-ET4, PL1, PL2 generate the first electric
field and the second electric field that are the same as or
different from each other.
[0039] For example, in a frame including a first sub-frame, a
second sub-frame, and a third sub-frame, gray scale data of the
blue light, the green light, and the red light are 128, 128, and
128 respectively.
[0040] In a first sub-frame, the first backlight source BL1 is
configured to provide the blue light to the liquid crystal display
medium LC1, LC2. The second backlight source BL2 and the third
backlight source BL3 are nonluminous. At this point, the first
electric field and the second electric field provided by the
electric field applying component ET1-ET4, PL1, PL2 have different
electric field intensities. In one embodiment, the intensity ratio
of the first electric field to the second electric field is 36:28.
In one embodiment, the electric field applying component ET1-ET4,
PL1, PL2 may for example enable the electrode ET1 and the electrode
ET3 to have a voltage difference of 3.6 V, and enable the electrode
ET2 and the electrode ET4 to have a voltage difference of 2.8
V.
[0041] In a subsequent second sub-frame following the first
sub-frame, the second backlight source BL2 is configured to provide
the green light to the liquid crystal display medium LC1, LC2. The
first backlight source BL1 and the third backlight source BL3 are
nonluminous. At this point, the first electric field and the second
electric field provided by the electric field applying component
ET1-ET4, PL1, PL2 have a same intensity. In one embodiment, the
electric field applying component ET1-ET4, PL1, PL2 may for example
enable the electrode ET1 and the electrode ET3 to have a voltage
difference of 3.6 V, and enable the electrode ET2 and the electrode
ET4 to also have a voltage difference of 3.6 V.
[0042] In a subsequent third sub-frame following the second
sub-frame, the third backlight source BL3 is configured to provide
the red light to the liquid crystal display medium LC1, LC2. The
first backlight source BL1 and the second backlight source BL2 are
nonluminous. At this point, the first electric field and the second
electric field provided by the electric field applying component
ET1-ET4, PL1, PL2 have different intensities. In one embodiment,
the intensity ratio of the first electric field to the second
electric field is 36:42. In one embodiment, the electric field
applying component ET1-ET4, PL1, PL2 may for example enable the
electrode ET1 and the electrode ET3 to have a voltage difference of
3.6 V, and enable the electrode ET2 and the electrode ET4 to have a
voltage difference of 4.2 V.
[0043] Through the aforementioned operations, voltage/transmittance
curves (also referred to as gamma curves) of the blue light, the
green light, and the red light are generally superposed with each
other (referring to FIG. 2B). In this way, the complexity in
controlling the light to pass through the liquid crystal display
medium may be decreased, and the generation of the color shift
under a high voltage may be avoided.
[0044] It should be noted that, in one embodiment, the intensity
ratio of the first electric field to the second electric field in
the second sub-frame may be between the intensity ratio of the
first electric field to the second electric field in the first
sub-frame and the intensity ratio of the first electric field to
the second electric field in the third sub-frame. In one
embodiment, the intensities of the first electric field and the
second electric field in the second sub-frame may be different from
each another, and thus the present disclosure is not limited to the
embodiment where the intensities of the first electric field and
the second electric field in the second sub-frame are the same as
each another.
[0045] Hereinafter, details of one embodiment of the present
disclosure are illustrated in connection with FIG. 4, but the
present disclosure is not limited thereto.
[0046] In one embodiment, the display device 100B includes a first
substrate SUB1, a second substrate SUB2, a first liquid crystal
display medium LC11, LC12, a second liquid crystal display medium
LC21, LC22, a third liquid crystal display medium LC31, LC32, a
first electric field applying component ET11-ET14, PL11, PL12, a
second electric field applying component ET21-ET24, PL21, PL22, a
third electric field applying component ET31-ET34, PL31, PL32, a
first color filter CF1, a second color filter CF2, a third color
filter CF3, and a backlight source BL. In one embodiment, the first
color filter CF1 is for example a blue filter, the second color
filter CF2 is for example a green filter, and the third color
filter CF3 is for example a red filter.
[0047] In one embodiment, the first liquid crystal display medium
LC11, LC12, the first electric field applying component ET11-ET14,
PL11, PL12, and the first color filter CF1 may be defined as a
first sub-pixel PX1, the second liquid crystal display medium LC21,
LC22, the second electric field applying component ET21-ET24, PL21,
PL22, and the second color filter CF2 may be defined as a second
sub-pixel PX2, and the third liquid crystal display medium LC31,
LC32, the third electric field applying component ET31-ET34, PL31,
PL32, and the third color filter CF3 may be defined as a third
sub-pixel PX3.
[0048] In one embodiment, the backlight source BL is configured to
provide a white light to the first liquid crystal display medium
LC11, LC12, the second liquid crystal display medium LC21, LC22,
and the third liquid crystal display medium LC31, LC32. The white
light operatively passes through the first liquid crystal display
medium LC11, LC12, the second liquid crystal display medium LC21,
LC22, and the third liquid crystal display medium LC31, LC32, and
is filtered by the first color filter CF1, the second color filter
CF2, and the third color filter CF3 respectively into lights of
different colors.
[0049] In one embodiment, the first electric field applying
component ET11-ET14, PL11, PL12, the second electric field applying
component ET21-ET24, PL21, PL22, and the third electric field
applying component ET31-ET34, PL31, PL32 are disposed on the second
substrate SUB2.
[0050] In one embodiment, the first electric field applying
component ET11-ET14, PL11, PL12 includes electrodes ET11-ET14 and
electrode posts PL11 and PL12. The electrode posts PL11 and PL12
are respectively disposed at two opposite sides of the liquid
crystal display medium LC11, LC12. In one embodiment, the
electrodes ET11 and ET12 are respectively disposed at two opposite
ends of the electrode post PL11, and the electrodes ET13 and ET14
are respectively disposed at two opposite ends of the electrode
post PL12.
[0051] In one embodiment, the second electric field applying
component ET21-ET24, PL21, PL22 includes electrodes ET21-ET24 and
electrode posts PL21 and PL22. The electrode posts PL21 and PL22
are respectively disposed at two opposite sides of the liquid
crystal display medium LC21, LC22. In one embodiment, the
electrodes ET21 and ET22 are respectively disposed at two opposite
ends of the electrode post PL21, and the electrodes ET23 and ET24
are respectively disposed at two opposite ends of the electrode
post PL22.
[0052] In one embodiment, the third electric field applying
component ET31-ET34, PL31, PL32 includes electrodes ET31-ET34 and
electrode posts PL31 and PL32. The electrode posts PL31 and PL32
are respectively disposed at two opposite sides of the liquid
crystal display medium LC31, LC32. In one embodiment, the electrode
ET31 and ET32 are respectively disposed at two opposite ends of the
electrode post PL31, and the electrodes ET33 and ET34 are
respectively disposed at two opposite ends of the electrode post
PL32.
[0053] In one embodiment, a first voltage difference is provided
between the electrode ET11 and the electrode ET13, for applying a
first electric field to the liquid crystal display medium LC11, a
second voltage difference is provided between the electrode ET12
and the electrode ET14, for applying a second electric field to the
liquid crystal display medium LC12, a third voltage difference is
provided between the electrode ET21 and the electrode ET23, for
applying a third electric field to the liquid crystal display
medium LC21, a fourth voltage difference is provided between the
electrode ET22 and the electrode ET24, for applying a fourth
electric field to the liquid crystal display medium LC22, a fifth
voltage difference is provided between the electrode ET31 and the
electrode ET33, for applying a fifth electric field to a liquid
crystal display medium LC31, and a sixth voltage difference is
provided between the electrode ET32 and the electrode ET34, for
applying a sixth electric field to the liquid crystal display
medium LC32.
[0054] In the present embodiment, the first electric field to the
sixth electric field are all generally parallel to the first
substrate SUB1 and the second substrate SUB2. In the present
embodiment, the intensity of the first electric field is
operatively different from that of the second electric field, and
the first voltage difference is operatively different from the
second voltage difference. The intensity of the third electric
field is operatively different from that of the fourth electric
field, and the third voltage difference is operatively different
from the fourth voltage difference. The intensity of the fifth
electric field is operatively different from that of the sixth
electric field, and the fifth voltage difference is operatively
different from the sixth voltage difference.
[0055] In one embodiment, in the same frame, the intensity ratio of
the first electric field to the second electric field, the
intensity ratio of the third electric field to the fourth electric
field, and the intensity ratio of the fifth electric field to the
sixth electric field are different from one another.
[0056] In one embodiment, the intensity ratio of the third electric
field to the fourth electric field is between the intensity ratio
of the first electric field to the second electric field and the
intensity ratio of the fifth electric field to the sixth electric
field.
[0057] For example, in the same frame, when the gray scale data of
the blue light, the green light, and the red light are 128, 128,
and 128 respectively, the first electric field applying component
ET11-ET14, PL11, PL12 for example can enable the electrode ET11 and
the electrode ET13 to have a voltage difference of 3.6 V, and
enable the electrode ET12 and the electrode ET14 to have a voltage
difference of 2.8 V, the second electric field applying component
ET21-ET24, PL21, PL22 for example can enable the electrode ET21 and
the electrode ET23 to have a voltage difference of 3.6 V, and
enable the electrode ET22 and the electrode ET24 to have a voltage
difference of 3.6 V, and the third electric field applying
component ET31-ET34, PL31, PL32 for example can enable the
electrode ET31 and the electrode ET33 to have a voltage difference
of 3.6 V, and enable the electrode ET32 and the electrode ET34 to
have a voltage difference of 4.2 V.
[0058] Through the aforementioned operations, voltage/transmittance
curves (also referred to as gamma curves) of lights of different
colors (including blue, green, and red) are generally superposed
with each other (referring to FIG. 2B). In this way, the complexity
in controlling the light to pass through the liquid crystal display
medium may be decreased, and the generation of the color shift
under a high voltage may be avoided.
[0059] It should be noted that, in various embodiments, the
intensity of the third electric field may be different from that of
the fourth electric field, and thus the present disclosure is not
limited to the embodiment where the intensity of the above third
electric field is the same as that of the fourth electric
field.
[0060] Hereinafter, details of one embodiment of the present
disclosure are illustrated in connection with FIG. 1 and FIG. 5,
but the present disclosure is not limited thereto. In one
embodiment, the display device 100 may provide a data voltage
VDATA1 to the electrode ET1, provide a data voltage VDATA2 to the
electrode ET2, and provide a common voltage VCOM to the electrodes
ET3 and ET4, thus enabling the electrodes ET3 and ET4 to become a
common electrode. In this embodiment, the display device 100 has an
equivalent pixel circuit PC1, wherein the capacitor of the
electrode post PL1 is represented as a capacitor CWALL, and the
liquid crystal display medium LC1, LC2 is respectively represented
as liquid crystal components CLC1, CLC2.
[0061] In the present embodiment, the liquid crystal component CLC1
is coupled between a first end of the capacitor CWALL and the
common electrode having the common voltage VCOM. The liquid crystal
component CLC2 is coupled between a second end of the capacitor
CWALL and the common electrode having the common voltage VCOM. A
storage capacitor CST1 is coupled in parallel to the liquid crystal
component CLC1. A storage capacitor CST2 is coupled in parallel to
the liquid crystal component CLC2. A switch SW1 is coupled between
the storage capacitor CST1 and a first data line, for providing the
data voltage VDATA1 to the storage capacitor CST1. A switch SW2 is
coupled between the storage capacitor CST2 and a second data line,
for providing the data voltage VDATA2 to the storage capacitor
CST2. Gate ends of the gate switches SW1 and SW2 are coupled to a
gate line, for receiving a scan signal VGT.
[0062] Through the above configuration, the data voltages
VDATA1-VDATA2 and the common voltage VCOM can be used to apply the
electric fields of different intensities to different portions of
the liquid crystal display medium LC1, LC2. In this way, the liquid
crystal display medium LC1, LC2 can allow more refined operations
thereof.
[0063] Hereinafter, details of one embodiment of the present
disclosure are illustrated in connection with FIG. 1 and FIG. 6,
but the present disclosure is not limited thereto. In one
embodiment, the display device 100 may provide a data voltage
VDATA1 to the electrode ET1, provide a data voltage VDATA2 to the
electrode ET2, provide a data voltage VDATA3 to the electrode ET4,
and provide a common voltage VCOM to the electrode ET3. In this
embodiment, the display device 100 has an equivalent pixel circuit
PC2, wherein the capacitor of the electrode post PL1 is represented
as a capacitor CWALL1, the capacitor of the electrode post PL2 is
represented as a capacitor CWALL2, and the liquid crystal display
medium LC1, LC2 is respectively represented as liquid crystal
components CLC1, CLC2.
[0064] In the present embodiment, the liquid crystal component CLC1
is coupled between a first end of the capacitor CWALL1 and a first
end of the capacitor CWALL2. The liquid crystal component CLC2 is
coupled between a second end of the capacitor CWALL1 and a second
end of the capacitor CWALL2. A storage capacitor CST1 is coupled in
parallel to the liquid crystal component CLC1. A storage capacitor
CST2 is coupled in parallel to the liquid crystal component CLC2. A
switch SW1 is coupled between the storage capacitor CST1 and a
first data line, for providing the data voltage VDATA1 to the
storage capacitor CST1. A switch SW2 is coupled between a first end
of the storage capacitor CST2 and a second data line, for providing
the data voltage VDATA2 to the first end of the storage capacitor
CST2. A switch SW3 is coupled between a second end of the storage
capacitor CST2 and a third data line, for providing the data
voltage VDATA3 to the second end of the storage capacitor CST2. The
common electrode having the common voltage VCOM is electrically
connected to the first end of the capacitor CWALL2. Gate ends of
the gate switches SW1, SW2, and SW3 are coupled to a gate line, for
receiving a scan signal VGT.
[0065] Through the above configuration, the data voltages
VDATA1-VDATA3 and the common voltage VCOM can be used to apply the
electric fields of different intensities to different portions of
the liquid crystal display medium LC1, LC2. In this way, the liquid
crystal display medium LC1, LC2 can allow more refined operations
thereof.
[0066] Hereinafter, details of one embodiment of the present
disclosure are illustrated in connection with FIG. 1 and FIG. 7,
but the present disclosure is not limited thereto. In one
embodiment, the display device 100 may provide a data voltage
VDATA1 to the electrodes ET1 and ET2, provide a data voltage VDATA2
to the electrode ET3, and provide a common voltage VCOM to the
electrode ET4. In this embodiment, the display device 100 has an
equivalent pixel circuit PC3, wherein the capacitor of the
electrode post PL2 is represented as a capacitor CWALL, and the
liquid crystal display medium LC1, LC2 is respectively represented
as liquid crystal components CLC1, CLC2.
[0067] In the present embodiment, a first end of the liquid crystal
component CLC1 is coupled to a first end of the capacitor CWALL. A
first end of the liquid crystal component CLC2 is coupled to a
second end of the capacitor CWALL and the common electrode having
the common voltage VCOM. A second end of the liquid crystal
component CLC2 is coupled to a second end of the liquid crystal
component CLC1. A storage capacitor CST1 is coupled in parallel to
the liquid crystal component CLC1. A storage capacitor CST2 is
coupled in parallel to the liquid crystal component CLC2. A switch
SW1 is coupled between the second end of the liquid crystal
component CLC1 and a first data line, for providing the data
voltage VDATA1 to the second end of the liquid crystal component
CLC1. A switch SW2 is coupled between the first end of the liquid
crystal component CLC1 and a second data line, for providing the
data voltage VDATA2 to the first end of the liquid crystal
component CLC1. Gate ends of the gate switches SW1 and SW2 are
coupled to a gate line, for receiving a scan signal VGT.
[0068] Through the above configuration, the data voltages
VDATA1-VDATA2 and the common voltage VCOM can be used to apply the
electric fields of different intensities to different portions of
the liquid crystal display medium LC1, LC2. In this way, the liquid
crystal display medium LC1, LC2 can allow more refined operations
thereof.
[0069] FIG. 8 is a flow chart of an operating method 200 of a
display device according to one embodiment of the present
disclosure.
[0070] It should be noted that, the operating method 200 of a
display device can be applied to a display device having a
structure the same as or similar to that in FIG. 1. For simplicity
of description, the display device 100 in FIG. 1 is taken as an
example below to describe the operating method 200 of a display
device according to one embodiment of the present disclosure, but
the present disclosure is not limited thereto.
[0071] In addition, it should be understood that, the order of the
steps of the operating method 200 of a display device mentioned in
the present embodiment can all be adjusted according to actual
requirements, or even can be implemented fully or partially
simultaneously, unless otherwise indicated.
[0072] Furthermore, in various embodiments, these steps can also be
adaptively added, replaced, and/or omitted.
[0073] In the present embodiment, the operating method 200 of a
display device includes the following steps.
[0074] In Step S1, the electric field applying component applies a
first electric field to the liquid crystal display medium LC1.
[0075] In Step S2, the electric field applying component applies a
second electric field to the liquid crystal display medium LC2,
wherein the first electric field and the second electric field are
parallel to the first substrate SUB1, and the intensity of the
first electric field is operatively different from that of the
second electric field.
[0076] It should be noted that, specific details of the above steps
may refer to the above-mentioned paragraphs, thus the detailed will
not be repeated herein.
[0077] Through the above operations, different portions of the
liquid crystal display medium LC1, LC2 can allow more refined
operations thereof, improving the displaying quality of the display
device 100.
[0078] FIG. 9 is a flow chart of an operating method 200A of a
display device according to one embodiment of the present
disclosure.
[0079] It should be noted that, the operating method 200A of a
display device can be applied to a display device having a
structure the same as or similar to that in FIG. 3. For simplicity
of description, the display device 100A in FIG. 3 is taken as an
example below to describe the operating method 200A of a display
device according to one embodiment of the present disclosure, but
the present disclosure is not limited thereto.
[0080] In addition, it should be understood that, the order of the
steps of the operating method 200A of a display device mentioned in
the present embodiment can all be adjusted according to actual
requirements, or even can be implemented fully or partially
simultaneously, unless otherwise indicated.
[0081] Furthermore, in various embodiments, these steps can also be
adaptively added, replaced, and/or omitted.
[0082] In the present embodiment, the operating method 200A of a
display device includes the following steps.
[0083] In Step T1, in a first sub-frame, the first backlight source
BL1 is configured to provide a first-color light to the liquid
crystal display medium LC1, LC2.
[0084] In Step T2, in the first sub-frame, the electric field
applying component ET1-ET4, PL1, PL2 applies a first electric field
to the liquid crystal display medium LC1.
[0085] In Step T3, in the first sub-frame, the electric field
applying component ET1-ET4, PL1, PL2 applies a second electric
field that is different from the first electric field to the liquid
crystal display medium LC2.
[0086] In Step T4, in a second sub-frame, the second backlight
source BL2 is configured to provide a second-color light that is
different from the first-color light to the liquid crystal display
medium LC1, LC2.
[0087] In Step T5, in the second sub-frame, the electric field
applying component ET1-ET4, PL1, PL2 applies the first electric
field to the liquid crystal display medium LC1.
[0088] In Step T6, in the second sub-frame, the electric field
applying component ET1-ET4, PL1, PL2 applies the second electric
field that is the same as or different from the first electric
field to the liquid crystal display medium LC2.
[0089] In Step T7, in a third sub-frame, the third backlight source
BL3 is configured to provide a third-color light that is different
from the first-color light and the second-color light to the liquid
crystal display medium LC1, LC2.
[0090] In Step T8, in the third sub-frame, the electric field
applying component ET1-ET4, PL1, PL2 applies the first electric
field to the liquid crystal display medium LC1.
[0091] In Step T9, in the third sub-frame, the electric field
applying component ET1-ET4, PL1, PL2 applies the second electric
field that is different from the first electric field to the liquid
crystal display medium LC2.
[0092] It should be noted that, specific details of the above steps
can refer to the above-mentioned paragraphs, thus the details will
not be repeated herein.
[0093] Through the above operations, different portions of the
liquid crystal display medium LC1, LC2 can allow more refined
operations thereof, improving the displaying quality of the display
device 100A.
[0094] FIG. 10 is a flow chart of an operating method 200B of a
display device according to one embodiment of the present
disclosure.
[0095] It should be noted that, the operating method 200B of a
display device can be applied to a display device having a
structure the same as or similar to that in FIG. 4. For simplicity
of description, the display device 100B in FIG. 4 is taken as an
example below to describe the operating method 200B of a display
device according to one embodiment of the present disclosure, but
the present disclosure is not limited thereto.
[0096] In addition, it should be understood that, the order of the
steps of the operating method 200B of a display device mentioned in
the present embodiment can all be adjusted according to actual
requirements, or even can be implemented fully or partially
simultaneously, unless otherwise indicated.
[0097] Furthermore, in various embodiments, these steps can also be
adaptively added, replaced, and/or omitted.
[0098] In the present embodiment, the operating method 200B of a
display device includes the following steps.
[0099] In Step R1, the first electric field applying component
ET11-ET14, PL11, PL12 applies a first electric field to the first
portion LC11 of the first liquid crystal display medium.
[0100] In Step R2, the first electric field applying component
ET11-ET14, PL11, PL12 applies a second electric field that is
different from the first electric field to the second portion LC12
of the first liquid crystal display medium.
[0101] In Step R3, the second electric field applying component
ET21-ET24, PL21, PL22 applies a third electric field to the first
portion LC21 of the second liquid crystal display medium.
[0102] In Step R4, the second electric field applying component
ET21-ET24, PL21, PL22 applies a fourth electric field that is the
same as or different from the third electric field to the second
portion LC22 of the second liquid crystal display medium.
[0103] In Step R5, the third electric field applying component
ET31-ET34, PL31, PL32 applies a fifth electric field to the first
portion LC31 of the third liquid crystal display medium.
[0104] In Step R6, the third electric field applying component
ET31-ET34, PL31, PL32 applies a sixth electric field that is
different from the fifth electric field to the second portion LC32
of the third liquid crystal display medium.
[0105] It should be noted that, specific details of the above steps
can refer to the above-mentioned paragraphs, thus the details will
not be repeated herein.
[0106] Through the aforementioned operations, voltage/transmittance
curves of lights of different colors (such as blue light, green
light, and red light) are generally superposed with each other
(referring to FIG. 2B). In this way, the complexity in controlling
the light to pass through the liquid crystal display medium may be
decreased, and the generation of the color shift under a high
voltage may be avoided.
[0107] Even though the present disclosure has been disclosed in the
above-mentioned embodiments, it is not limited thereto. Any person
of ordinary skill in the art may make various changes and
modifications without departing from the spirit and scope of the
present disclosure. Therefore, the scope of the present disclosure
is defined by the appended claims.
* * * * *